SU1161726A1 - Device for diagnosis of hydraulic drive - Google Patents

Abstract

DEVICE FOR DIAGNOSTICS OF A GUN-DRIVE, containing pressure sensors, a switch whose inputs are connected to pressure sensors, converters, multivibrators, a recording unit and logic elements AND, one input of each of which is connected to the output of a multi-vibrator, another input, through a converter with a switch output, and the output is with the registration unit, which is so that, in order to expand its functionality, it is equipped with a movement meter of the moving element of the hydraulic drive and pulse shapers, and the converters are made in the form of threshold devices, the number of which is equal to the number of logical elements AND and the number of multivibrators, each multivibrator connected by an input to a displacement meter, and at the output of each multivibrator and each threshold device is installed (L pulse generator.

Description

9: P1

N5. 35

one

The invention relates to test equipment and is intended for indiscriminate diagnostics of the technical condition of hydraulic actuators.

A device for diagnostics of a hydraulic drive is known, which contains g: atchiki, converters, a switching unit and a recording unit lj.

A disadvantage of the known device is the narrowness of its functionality.

It is also known a device for diagnostics of a hydraulic drive, comprising pressure sensors, a switch, the inputs of which are connected to pressure sensors, converters, multivibrators, a recording unit and logic elements AND, one input of each of which is connected to the output of the multivibrator, and another input through a converter output of a switch and the output is with the registration unit,

The disadvantage of such a device is also the narrowness of its functional capabilities, since it does not allow to establish the place of failure in the hydraulic drive.

The aim of the invention is to expand the functional possibilities.

This goal is achieved by the fact that the hydraulic diagnostics device contains pressure sensors, a switch whose inputs are connected to pressure sensors, transducers, multivibrators, a recording unit and logic gates And, one input each of which is connected to the output of the multivibrator, another input through a converter - with the switch output, and the output - with the registration unit, equipped with a measuring device for moving the hydraulic element and pulse shapers, and the converters are made in the form of threshold devices roystv, the number of which equals the number of AND gates and the number multivibrators, wherein KAJDAN multivibrator is connected to meter movement and navyhode kazhdogomultivibratorai each threshold set pulse shaper device.

The drawing shows a block diagram of a device for the diagnosis of hydraulic-water.

. The device contains 1-A pressure sensors, a displacement meter for a moving element, for example a piston.

726.2

pump (not shown) of hydraulic drive 5, made in the form of sensors 6 and 7 of the Position, switch 8, the inputs of which are connected to sensors 1-4, threshold devices 9-t2, multivibrators, logic elements 17-20, registration block 21 and drivers 22- 29 pulses, mounted on the impedances of devices 9-12 and multivibrators 13-16. The first inputs of the elements And 17-20 are connected through the formers 22-25 and the threshold devices 9-12 with the output of the switch 8, the second inputs through the formers 2629 and the multivibrators 13-16 with sensors 6 and 7, and the outputs with the block 21 Sensors 6 and 7 are installed in the extreme positions of the piston. The hydraulic actuator 5 has valves for supplying and discharging the working medium.

The device for diagnostics of the hydraulic drive works as follows.

The signals from sensors 1-4 through switch 8 are sent to threshold devices: 9-12, which are tuned to predetermined limitation thresholds, and then to pulse shapers 22-25, which generate pulses normalized in duration, polarity and amplitude, fed to the first inputs elements and 17-20.

The signal from sensor 6 serves to start multivibrators 13 and 14, which generate pulses with a duration equal to the lag time of the supply valve and the time of fluid compression, respectively. The signal from sensor 7 serves to start multivibrators 15 and 16, which generate pulses of a duration equal to, respectively. the delay time of the other valve; and the time the fluid expands. By the moment of cutting these pulses, 26-29 pulses are generated by pulses, normalized in duration and amplitude. These pulses are applied to the second inputs of the respective AND elements 17-20.

During normal operation, the signals from the formers of 22-25 pulses coincide in time with the signals from the formers of 26-29 pulses, respectively, which causes signals (logical units) at the output of the AND elements 17-20.

In the event of a malfunction, the input signal is changed, which causes a change in response times.

3/1161726 .4

one or several threshold normal operation or malfunction 9-12, depending on the nature of one or another element of the hydro fault location and, thus, the drive.

the arrival time of the pulses changes.

on the first entrances of the respective use of the proposed

elements 17-20, and therefore, devices for diagnostics of hydraulic outlets of the elements AND the presence-water allows without disassembling;

A logical zero. Live faulty elements, i.e. gives

The signals from the outputs of the I17-flash elements to speed up the elimination of the nonsens20 arrive at the registration unit 21, tO of correctness and reduce the apertfl aros1H) I

where, in accordance with these signals, the equipment and

A signal is generated that informs you of the effectiveness of its use.

Claims (1)

A HYDRAULIC DIAGNOSTIC DEVICE, containing pressure sensors, a switch, the inputs of which are connected to pressure sensors, transducers, multivibrators, a recording unit and logical elements AND, one input of each of which is connected to the output of the multivibrator, the other input, through the converter, to the output of the switch, and the output is with a registration unit, which entails that, in order to expand the functionality, it is equipped with a displacement meter for the movable element of the hydraulic drive and pulse shapers, and Browsers are made in the form of threshold devices, the number of which is equal to the number of logical elements AND and the number of multivibrators, with each multivibrator connected to an input with a displacement meter, and a pulse shaper is installed at the output of each multivibrator and each threshold device. SU „1161726 F 15 28